Home / 718,015.56-990,900.45-412,089.50

Finding the Fourth Proportional to 718,015.56, 990,900.45 and 412,089.50

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Solution

The fourth proportional to 718,015.56, 990,900.45 and 412,089.50 is: 568,705.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,015.56 : 990,900.45 = 412,089.50 : x
  2. Step 2: Convert to fraction form
    718,015.56/990,900.45 = 412,089.50/x
  3. Step 3: Cross multiply
    718,015.56x = 990,900.45 × 412,089.50
  4. Step 4: Simplify right side
    718,015.56x = 408,339,666,035.77
  5. Step 5: Solve for x
    x = 408,339,666,035.77/718,015.56
  6. Step 6: Final answer
    x = 568,705.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.